I tried to go from SFO to South Bay a while back around midnight and eventually took a cab after being cancelled by multiple Uber drivers. Some even called me, asked where I was going, then angrily said they don't go to South Bay and cancelled.
Heh, I've always had the opposite experience. They either want to go to the city or somewhere far South. Something close like Millbrae, South City or Burlingame? They cancel the ride.
I believe all of these stories; I just don't understand why people expect or believe taxi drivers and Uber drivers are fundamentally different people with different incentives.